B23B 51/04
Drills for trepanning
Official title: {Drills} for trepanning
B23B51/04 (Drills for trepanning) appears on 854 US grants and 755 published applications in this corpus.
Search patents in B23B- Granted patents
- 854
- Published applications
- 755
- Assignees
- 339
- Inventors
- 1,312
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 4 | 0 |
| 1980 | 11 | 0 |
| 1981 | 11 | 0 |
| 1982 | 5 | 0 |
| 1983 | 14 | 0 |
| 1984 | 11 | 0 |
| 1985 | 13 | 0 |
| 1986 | 21 | 0 |
| 1987 | 13 | 0 |
| 1988 | 11 | 0 |
| 1989 | 10 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 9 | 0 |
| 1995 | 15 | 0 |
| 1996 | 1 | 0 |
| 1997 | 15 | 0 |
| 1998 | 25 | 0 |
| 1999 | 25 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 3 |
| 2002 | 10 | 18 |
| 2003 | 15 | 13 |
| 2004 | 9 | 27 |
| 2005 | 17 | 32 |
| 2006 | 17 | 25 |
| 2007 | 14 | 35 |
| 2008 | 14 | 29 |
| 2009 | 17 | 34 |
| 2010 | 20 | 32 |
| 2011 | 20 | 34 |
| 2012 | 19 | 20 |
| 2013 | 13 | 20 |
| 2014 | 26 | 37 |
| 2015 | 18 | 31 |
| 2016 | 24 | 27 |
| 2017 | 34 | 37 |
| 2018 | 39 | 40 |
| 2019 | 41 | 42 |
| 2020 | 31 | 33 |
| 2021 | 37 | 45 |
| 2022 | 15 | 19 |
| 2023 | 18 | 37 |
| 2024 | 19 | 38 |
| 2025 | 20 | 27 |
| 2026 | 26 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23B 51/0426With centering devices232
- B23B 51/0473Details about the connection between the driven shaft and the tubular cutting217
- B23B 51/0486With lubricating or cooling equipment114
- B23B 51/0453With ejecting devices91
- B23B 51/044With core holding devices80
- B23B 51/0467Details of the tubular body sidewall60
- B23B 51/05For cutting discs from sheet51
- B23B 51/0466With exchangeable cutting inserts39
Recent patents
- Hole saw combined with annular rabbet maker15 Sep 2026US 12,734,592 B1AMP Plus, Inc.
- Method of using a pipe coupon retainer15 Sep 2026US 12,734,593 B2Mueller International, LLC
- Plug cutting tool and related method of use15 Sep 2026US 12,734,594 B2National Nail Corp.
- Adaptor for use with core bit and augur motor8 Sep 2026US 12,728,466 B1
- Hole-saw with brazed or welded endcap25 Aug 2026US 12,715,053 B2Milwaukee Electric Tool Corporation
- Holesaw assembly8 Oct 2026US 2026/0307158 A1Black & Decker Inc.
- Support assembly for a core drill3 Sep 2026US 2026/0257285 A1Western Saw Manufacturers, Inc.
- Clamping Mandrel Adapter Device, Assembly Method for Assembling a Clamping Mandrel Adapter Device, and Machine Tool System with a Machine Tool and with a Clamping Mandrel Adapter Device20 Aug 2026US 2026/0241466 A1Robert Bosch GmbH
- Precision guide for a bowling ball drill bit6 Aug 2026US 2026/0225164 A1
- Hollow drill bit30 Jul 2026US 2026/0216798 A1Tec-Spiral Enterprises Tools Co., Ltd.
Most cited
By later US patents
- Manual tool for removing material from brittle and/or non-ductile stock416US 5,733,074 AHilti Aktiengesellschaft · 1998
- Hole saw and connection method118US 6,705,807 B1Black & Decker Inc. · 2004
- Tubular hole cutter112US 6,786,684 B12004
- Non-metallic body cutting tools111US 5,865,571 ANorton Company · 1999
- Hole saw103US 5,803,677 ACredo Tool Company · 1998